Beating engine



July 3, 1928.,

L. SHLICK .BEATING ENGINE Original Filed Jan. 25, 1925 1 K C h h S O 3 LCL Orney.

Patented July 3, 1928.

UNITED STATES PATENT OFFICE.

LEO SHLICK, or BOSTON, MASSACHUSETTS.

- BEATING ENGINE.

Application filed January 25, 1923, Serial No. 615,451. Renewed January19,1927.

This inventionvv relates to machines commonly called beating engines,designed for the preparation of pulp in the manufacture of paper, andithas for its object the efconstruction hereinafter set forth andillustrated in the accompanying drawings, in

which Fig. 1 is a side elevation of a beatparts thereof being shown asbroken away and in section. Fig. 2 is a, plan View of the same, partsbeing broken away. Fig. 3 is a sectional view of a detail thereof. Fig.4shows a section of the beater roll. is an end viewof the deflector.

The heater roll 1 is supported within one end of the beater tub 2 bymeans of levers 3 pivoted at 4 to posts 5, andhaving its trunnions 6rotatable in boxes 7 carried by.

the levers 3. As shown in Fig. 2, the tub 2 is aproximately pear-shaped,the roll 1 occupying its narrower end 9, the enclosing to 10risingconsiderably higher; than the r0 1. Between thistoplO and asloping side of the tub to a. hollow post/14 andforms,

wall of the tub, a channel for the passage of the stock from over theroll to the wider end of the tub. As the stock flows down this inclinedchannel, it sweeps aboutthehollow V 11 tothe beater roll 1- andthebedplate 15 coacting therewith.- The better to deliver the stock to theroll,a wall 16 is formed between the floor 11 and the auxiliary floor"12, as shown in dotted lines in Fig. 2.

The top or hood l0 terminates .near'the post 14 at a level belowthatofthe crest of a the auxiliary floor or backfall 12, and tothistermination is hinged achannel-contracting ing engine embodying myimprovements,

Fig; 5,

f floor 11 is an auxiliary floor 12' descending from a level above thatofthe topmost point of the roll down toward the larger end of" the tub.A vertical wall 13 passes from a with the auxiliary floor 12 and theopposite post 14 and thence down the inclined floor ,ovateyincrosssection, as shown in Fig. 1,

by todiminish superficial friction thereto;

while the longitudinal curvature is to reduce the resistance to thestream issuing from beneath it. i

6 fecting of the improvements, in details of hood 10 at 19, and isadjustably held by a slotted car 20 and a bolt 21; and its purpose is soto create a head between the level of the outer edge of the contractorand that of the crest of the backfall as to give a greatly increased.speed of flow to the stock along the remainder ofthe channel to the rolland bed-plate To the crest of the backfall 12 is hinged a deflector 2E2curved to present its concave surface toward the roll 1, and having itsfree end supported by pins 23 passing out through slots 24 in thetub-wall, andconnecte'd tothe bearing boxes/T. A plate $0 25 penetratedthe pin 23 thereat and pressed tightly against the tub-wall byahelicalspring 26,-as shown in Fig. 3,--serves* toprevent the-leakage of thestock through the slots 24. a r 1 i i At the free end ofthe front leverB is a supporting saddle 27 up against which is pressed a helical spring29 which is in turn supported by a vertical screw rod 30, a nut 31 and apost 32.- A hand wheel 33 operates so .a worm 34 engaging the coggedperiphery of the nut 31 to enable the lever 3 to be raised and loweredas desired. the nearness of the beater roll to the bedplate beingindicated by a pointer 35 carried by the rod 35 30=inthefield of anindex 36. t The adjustment of the front lever 3 is transmitted totherear level 3 by means of a cross shaft-37 crank arms 39 ri 'idtherewith, and connections between these, crank arms and the levers. Oneor both of these connections may be provided with a turnbuckle 4Ofortheir accurate adjustment.

I prefer to form the beater tub channel in order to reduce surfacefriction and thereby to increase the speed of flow.

A discharge pipe 41 provided with a dumping valve 42 is located throughthe floor 11. close to'the. bedplate 15, as illustrated in Fig. 1, forthewithdrawal of the fully treated pulp. i I

wardly inclined with respect to the radii of the beater roll, I have thesurface. of each on its side of advance, made convex, tor

further improving their action: .on the stock.

Hinged or otherwise secured beneath the hackfall adjacent the breast "ofthe beater roll 1 is an apron 46 whose inner surface is eccentric to thebeater roll, and whose lower edgeor lip: is close. to the roll andspaced below the level oztthe axis of thebeater roll.

The purposev of the adjustable connection between the deflector 22 and.the bearing box 7 is to throw thc'ifree edge .of-the deflector 'up outof the .way 'otthe' fiybars whenever thebeaterrroll happens to jumpbecause of some especially large lumps of stock. This rods and .aturnibuckle 0t wellknown form.

I prefer to bolt the posts 5 and 32 to the sides of the tubafoundation.50, so that the entire machine composes an inflexible whole,

and does not have todepend upon the sup-.

porting floor for its rigidity.

Thecoperation of the machine is as follows: As the stock flows down theinclined fioorf 11 it is ire'ceived between the beater roll 1 and thebedplate 15 and givena more 22, and downthe' backt'all 12. The.retarding gate 17 being suitably adjusted and the beater rollsufiiciently rapid, theisto'ck accu- -mulates between the backtallandnthe gate.

of the deflector.

beaterroll with such a speed aswto ensure againstdeposits offthe pulp,.and to 1 permit 7 of :a considerably greater pulpeprodnction per unitof times \Vhat I claim is curved"defiectoiwpivoted at one end-to-thehack-fall and presentingi'itstreeiedge close-= to and above the beaterroll and on a line.

' beyond'isaid topmost point crest, a beater roll hood spaced above'saidr members and having its delivery end below said slot.

- thanitsinner surface. 1. A beating'enginecomprising a tub, a i beaterroll," a backfall higher than the topmost point of the beater roll,airupwardly it the level of said crest, and a lip pivoted to theextremity of said end and )rovided with means for its angular adjustmentand for rigidly retaining it at any desired point of adjustment. I

3. A beating enginecomprising a tub, a heater rolha back-fall and aconcave-convex apron hinged at its upper edge to said backanand-presenting its concave face toward said roll and its lower edgecloser thereto than its surface away therefrom.

4. A beating engine comprising a beater tub, a heater i'o'll'havingtrunnions, pivotally supported arms sustaining said trunnions means forcausing said arms to move equally, a vertically adjustable rod,'a sprlngcarried by said rod and supporting one of said arms,

*a bedplate andan index andan indicator carried by said rod andarmrespectivelyto show the "degree of pressure 'npon'the stock betweenthe roll and bedplatea v 5. A beating engine comprising a tub h'a"vingelevated sides and. an elevated back-tall, a heater roll, vertically:movable means rotatably supportingsaid roll ja deflector piv v oted tosaidback-fall, a rod passing outconnection; consists ot; oppositelythreaded wardly through the wallorside of said tub, the latter beingvertically.slottedtherefor,

said rod supporting. thetree end or said desurface of said wall or. sideand thereb y to prevent the escape ofliquid matterthrough 6., Abeatingengine compriSingzatub, a

beateiwroll, a back-plate,i yieldingly, supported means for. the beaterroll; a spring holding said means, and an. index connected with saidmeansior showing the degree-of pressure upon the stock betweentherolland bed-plate. until'it remains on the levelwith the crest.- ofthe-backfall,which is the topmost point.

The i head .thns gained causes the'stock to'issue frombeneath the; gatewith a high velocityand therebytrav. else the remainder of the channelto the 7. In a beatingengine, a beater "roll having fly-bars at anacute. angle with theradii thereof in a direction opposite the rollsperipheral travel, the surfaceot each fly-bar on its side of advancebeingconvex and the fl bars, being ,of substantially u if m thickness{,lWOuQmut.

-8QIn a "beating engine, a tub jhavingi its channel elliptical in crosssection theouter surface 1 thereof-Z being.

meeting at their j unctures in a substantially .19 havinggithe bladesand basesgoft-he flyrbars "segmental manner in order to gradually andmore efiiciently accelerate the stock with a lower power consumption. a

11'. A beating engine as set forth in claim 9 having the junction eachblade with its base at the circumference of the roll, and the gradualcurvature of the blades beginning at the said juncture and continuing tothe cutting edges thereof;

12. A beating engine as set forth in claim 9 having the curvature of theblades more pronounced adjacent the roll and becoming less curved aseach approaches its cutting edge.

13. A beating enginecoinprising a heater tub, a vertically movablebeater roll therein, and a hinged deflector presenting its free edgeclose to and above said roll, and connection between said free edge andthe supports of said roll, whereby the upward movements of the latterare transmitted to i the deflector.

14. A beating engine as set forth in claim 13 having adjustableconnection between the tub having a slot in a side wall adjacent saidvdeflector, a rod rigidly projecting through said slot from saiddeflector, connection between the outer end of said rod and thetrunnion-support below, and means for preventing leakage of the stockthrough said slot.

16. A beating engine comprising a tub. a

beater roll, and bed-plate, the floor of the tubohannel sloping downwardtoward the bed-plate, the pitch of the incline gradually steepening asthe bed-plate is approached.

In testimony that I claim the foregoing invention, I have hereunto setmy hand this 22nd day of January, 1923.

V LEO SHLICK.

